- Source: The Most Illustrious
- Orde Santo Patrick
- Bhumibol Adulyadej
- Sirindhorn
- Sirikit
- Orde Wangsa Kerajaan Chakri
- Prayut Chan-o-cha
- Siti Hartinah
- Ticomporn Yugala
- Chulcherm Yugala
- Nariratana
- The Most Illustrious
- Order of St Patrick
- Order of the Thistle
- The Most Excellent
- Republic of Venice
- Suthida
- Order of the Royal House of Chakri
- Hang Tuah
- Pontiff
- Clémentine Delait
The Most Illustrious (Spanish: Ilustrísimo Señor (male) or Ilustrísima Señora (female), literally "Illustrious Sir/Mister") is an honorific prefix that is traditionally applied to certain people in Spain and certain Spanish-speaking countries. It is a lower version of the prefix The Most Excellent (Excelentísimo/a Señor/a), and was traditionally applied to non-Grandee titled nobles in Spain, but is now used for a series of other offices.
In the Kingdom of Spain
The following State and Government officials receive the style "The Most Illustrious":
= Constitutional court and judiciary
=The President of the Economic Administrative Central Court
The Lawyers of the Spanish Council of State
= Central government
=The Finance Delegates
= Local authorities
=The Headmasters of Secondary State Schools
= Diplomacy
=The Embassy Counsellors
The Ministers Plenipotentiary of 3rd class
= Other institutions
=The Director of the Spanish Academy of Rome
The Director of the Spanish Agency of Data Protection
= Nobility
=Non-Grandee titleholders, their spouses and heirs
Non-firstborn children of Grandees
Other countries
Reference to a Duke in the UK's upper house of Parliament The House of Lords historically employed the prefix "the illustrious Duke" in the late 1800s. In the 21st century, it has been replaced by the generic prefix "the noble Duke" which is customarily used for all members of the House of Lords, irrespective of their rank.
In other countries, "The Most Illustrious" is rarely used, but rather "Illustrious Highness"
See also
The Most Excellent